(1) The Surface tension of water in contact with air at 23°C is given as 725x10+ N/m. The pressure inside a droplet of water is to be 0.0165 N/cm? greater than the outside pressure, calculate the diameter of a droplet of water in mm. (ii) The Surface tension of water in contact with air at 23°C is given as 745x104 N/m. The pressure inside a soap bubble is to be 0.0155 N/cm? greater than the outside pressure, calculate the radius of it in mm.

(1) The Surface tension of water in contact with air at 23°C is given as 725x10+ N/m. The pressure inside a droplet of water is to be 0.0165 N/cm? greater than the outside pressure, calculate the diameter of a droplet of water in mm. (ii) The Surface tension of water in contact with air at 23°C is given as 745x104 N/m. The pressure inside a soap bubble is to be 0.0155 N/cm? greater than the outside pressure, calculate the radius of it in mm.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter5: Analysis Of Convection Heat Transfer

Section: Chapter Questions

Problem 5.5P: Evaluate the dimensionless groups hcD/k,UD/, and cp/k for water, n-butyl alcohol, mercury, hydrogen,...

See similar textbooks

Similar questions

The tank of an air compressor has a volume of 2m3 and is filled with air at a temperature of 40 degrees C. If agauge pressure on the tank reads 7.5 bars,what is themass of the air in the tank?
An air bubble is observed from the bottom up to the water surface The atmospheric pressure is 101 325 kPa The volume of the bubble at the bottom is 1/7 times the volume of the bubble at the surface Determine the height of the water in meters.
Answer the following. A: When the pressure of liquid is increased from 3.5 MN/m² to 6.5 MN/m² its volume is found to decrease by (0.08) percent. What is the bulk modulus of elasticity of the liquid? B: An open cylindrical tank (1.2m) in diameter and (1.8m) deep is filled with water and rotated about its central axis at (60 r.p.m). How much liquid is spill and how deep of the water at the central axis.
4.Surface tension of water in contact with air at 23°C is given as 0.0717 N/m. Pressure inside a droplet of water is to be 0.0149 N/cm2 greater than the outside pressure, calculate diameter of droplet of water.
A full rectangular tank is 3.1m wide, 5.6m long, and 1.9 deep contains fluid weighting 663kN. Find the following: mass of the fluid kg
5. What is the pressure at the bottom of the 7.5 m tall storage tank of fluid at 25°C? Assume that the fluid is gasoline with atmospheric pressure 101 kPa on the top surface. Repeat the question for the liquid refrigerant R- 134a when the top surface pressure is 1 MPa. The densities of the liquids are: pgasoline = 750 kgm; PR-134a = 1206 kg/m2. %3D
The surface tension of water in contact with air is given as 0.71 N/m. Pressure inside a droplet of water is to be 120 N/m2 greater than the outside pressure. Calculate the diameter of water droplet in meter.
A closed heavy steel chamber is filled with water at 10°C and at atmospheric pressure. If the temperature of water and the chamber is raised to 40°C, what will be new pressure of water? The coefficient of thermal expansion of the steel is 1.17 x 10-5 per C, assume the chamber is unaffected by the water pressure. Use specific weight of pure water as a function of temperature and pressure for conditions where g = 9.81 m/s². Weight Density/m 9.900 5.350 9.300 4.750 2.700 20.90 bar 60.90 bar 30.80 bar 137.80 bar Hi Temperature (deg Cale C ( PK 90 -PI1750 # W C
A gas having a volume of 35 liters has a pressure of 0.24 MPa at 24oC. If the gas constant R is equal to 212 MNm/kg -oK, compute the density, mass, and weight of the gas.
2. There is a liquid having density of Np below a liquid of density p (N is an unknown constant). A piston of a rectangular cross section (width H into the page) is attached to a completely submerged sphere of density e/3 and volume 4/2H3, with a pulley attachment as shown in the figure. The piston surface has a 45° angle with respect to the horizontal direction and a 90° angle with the pulley cable. It is measured that the within the piston is atmospheric. pressure (a) Identify all the forces applied to the piston surface, and mark them on a free body diagram. Accurately indicate their points of action. (b) Evaluate N if all the forces applied to the piston surface balance. Air P/3 2H g Piston surface Np H
in the discussion, stress/pressure is could be obtained by the formula force over area with the units Pa or atm. Despite being defined by the amount of force that is vector quantity, why is stress/pressure considered a scalar quantity?
Oil Water, machine oil and salty sea water are filling a pipe, as water shown on the figure. The corresponding densities are: Pwater 1000 kg/m³, Poil Sea 0,6m %3D = 800 kg/m³ and Psea water = 1200 kg/m³. 0,5m Determine the pressure in point 1, the upper closed end of the pipe. Water 0,6т